package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    @GetMapping("/{id}")
    public R<Employee> queryEmployeeById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }
    @PutMapping
    private R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        log.info(employee.toString());
        Long empId = (Long) request.getSession().getAttribute("employee");
/*      employee.setUpdateUser(empId);
        employee.setUpdateTime(LocalDateTime.now());*/
        employeeService.updateById(employee);
        return R.success("信息修改成功");
    }
    @GetMapping("/page")
    public R<Page> page(Integer page ,Integer pageSize,String name){
        log.info("page = {},pageSize = {},name = {}" ,page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        if (name!=null) {
            queryWrapper.like(Employee::getName, name);
        }
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }
    //退出
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        // 从session中移除指定的元素
        //request.getSession().removeAttribute("employee");
        // 销毁session
        request.getSession().invalidate();
        return R.success("退出成功");
    }
    //登录
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        System.out.println("请求携带的参数信息为: "+employee);
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        log.info("MD5加密后的密文: "+password);
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if (emp==null){
            return R.error("用户不存在-登录失败");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("密码错误-登录失败");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }
    //添加用户
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
/*      employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/
        employeeService.save(employee);
        return R.success("新增员工成功");
    }
}
